In the absence of perceived risks at planning stage, initial cost underestimation or overestimation is commonly existent in hydropower projects. This study suggests an expert fuzzy-TOPSIS multiple criteria decision-making (MCDM) methodology for the initial cost estimation of a hydropower project. Risk factors along with their likelihood and impact are analyzed in pre-feasibility stage to assess the cost intervals per MW capacity. Project developers can use this philosophy to screen projects and identify critical areas for detailed investigations. To demonstrate the methodology's effectiveness, a case study of 126 MW Myntdu Leshka hydropower project in Meghalaya, India, is adopted. This study contributes to the limited research available concerning the analysis of risk factors for the cost assessment of a hydropower project.

在规划阶段没有感知到的风险的情况下，水电项目中通常存在初始成本低估或高估的情况。这项研究建议水电项目的初始成本估算的专家模糊TOPSIS多准则决策（MCDM）方法。在预可行性阶段分析风险因素及其可能性和影响，以评估每兆瓦容量的成本间隔。项目开发人员可以使用这种理念来筛选项目并确定关键区域以进行详细调查。为了证明该方法的有效性，我们以印度梅加拉亚邦的126兆瓦Myntdu Leshka水电项目为例进行了研究。这项研究有助于有关水力发电项目成本评估风险因素分析的有限研究。